Post hinge



FIG. 1 is a perspective view of a first embodiment of the post hinge showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front/rear view thereof; and,

FIG. 5 is a left/right view thereof. 

The ornamental design for “a post hinge,” as shown. 